Gerald Wright former scientist alongside Victor Fries in the field of cryogenics.
As a child Gerald was always bullied in Italy, the country he grew up in.
Every year during the reign of snow the kids always threw snowballs at him and laughed when he asked them to stop.
His father was then offered a job in Gotham city. Gerald was treated no differently then in Italy, and just like before he felt the cold snow thrown down the back of his neck.
So he decided that he would be the snowball thrower and when Victor became the monstrous Mr. Freeze he took up the mantel of the Snowballer, so everyone would have a bad snow day when he was around
For Batman's most idiotic villains